title: A study of hospitalized surgical patients on methadone maintenance.
mesh_terms: D000328:Adult; D000700:Analgesics / Q000627:therapeutic use; D005260:Female; D006801:Humans; D008297:Male; D008691:Methadone / Q000627:therapeutic use*; D010146:Pain / Q000188:drug therapy; D010343:Patient Admission; D013514:Surgical Procedures, Operative
chemical_list: D000700:Analgesics; D008691:Methadone